freeCodeCamp/curriculum/challenges/chinese/08-coding-interview-prep/project-euler/problem-24-lexicographic-permutations.chinese.md

id	challengeType	title	videoUrl	localeTitle
5900f3841000cf542c50fe97	5	Problem 24: Lexicographic permutations		问题24：字典排列

Description

置换是对象的有序排列。例如，3124是数字1,2,3和4的一种可能的排列。如果所有排列都以数字或字母顺序列出，我们称之为词典顺序。字典排列0,1和2是：

012 021 102 120 201 210

数字0,1,2,3,4,5,6,7,8和9的第n个词典排列是什么？

Instructions

Tests

tests:
  - text: <code>lexicographicPermutations(699999)</code>应该返回1938246570。
    testString: 'assert(lexicographicPermutations(699999) == 1938246570, "<code>lexicographicPermutations(699999)</code> should return 1938246570.");'
  - text: <code>lexicographicPermutations(899999)</code>应该返回2536987410。
    testString: 'assert(lexicographicPermutations(899999) == 2536987410, "<code>lexicographicPermutations(899999)</code> should return 2536987410.");'
  - text: <code>lexicographicPermutations(900000)</code>应该返回2537014689。
    testString: 'assert(lexicographicPermutations(900000) == 2537014689, "<code>lexicographicPermutations(900000)</code> should return 2537014689.");'
  - text: <code>lexicographicPermutations(999999)</code>应该返回2783915460。
    testString: 'assert(lexicographicPermutations(999999) == 2783915460, "<code>lexicographicPermutations(999999)</code> should return 2783915460.");'

Challenge Seed

function lexicographicPermutations(n) {
  // Good luck!
  return n;
}

lexicographicPermutations(999999);

Solution

// solution required